Mitsubishi TNMG160412-MS US735 | Roughing Stainless Steel Insert
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TNMG160412-MS US735
Mitsubishi Materials | The Heavy-Duty Stainless Steel Specialist
The Mitsubishi TNMG160412-MS US735 is a high-toughness CVD coated carbide insert engineered for aggressive stainless steel turning. With its reinforced 1.2mm nose radius, it is specifically built to withstand massive thermal shocks and mechanical impacts. As a premier long-tail precision tool, the US735 grade combined with the MS chipbreaker provides industry-leading reliability during heavy interrupted CNC machining of austenitic alloys.
M-Class Heavy Roughing | Maximum Edge Strength | MS Medium-Light Breaker
Technical Code Breakdown
Triangular
0° Relief
Tolerance
Hole/Chip
16.5mm Edge
4.76mm Thick
1.2mm Rad
Light-Med Breaker
ISO (Metric) vs ANSI (Inch) Reference
| Feature | ISO (Metric) | ANSI Equivalent |
|---|---|---|
| Model ID | TNMG160412-MS | TNMG 333 MS |
| Inscribed Circle | 9.525 mm | 0.375" |
| Corner Radius | 1.2 mm | 0.047" |
US735 Tough-Grade Carbide
The US735 grade is Mitsubishi's dedicated indexable turning insert for difficult stainless steel. Its unique coating layer prevents chemical reactions between the tool and the workpiece, drastically reducing built-up edge (BUE). It is the "safety-first" grade for heavy roughing where tool breakage is not an option.
MS Low-Force Chipbreaker
The MS chipbreaker is optimized for medium-light cutting depth but excels in 1.2mm radius configurations. It features a sharp cutting edge that slices through gummy alloys, ensuring effective chip control and lowering the spindle load, which prevents vibration during deep passes.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 50 - 130 m/min | 0.15 - 0.40 mm/rev | 1.5 - 4.5 mm |
| Duplex Stainless Steel | 40 - 90 m/min | 0.15 - 0.35 mm/rev | 1.0 - 3.5 mm |
HEAVY-DUTY HOLDER PAIRING
Optimized for standard MTJNR/L or high-rigidity WTJNR/L turning tool holders (Size 16).
Shop Size 16 Holders →
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.